05132015 May 13 2015 TRC Agenda PackagePage 1 of 3
TECHNICAL REVIEW COMMITTEE AGENDA
MAY 13, 2015
New Hanover County’s Technical Review Committee (TRC) will meet on Wednesday,
May 13, 2015 at 2:00 p.m. in the Lucie Harrell Conference Room (601) of the New
Hanover County Government Center located at 230 Government Center Drive to review
the following:
2:00 p.m. Item 1: Pumpkin Creek (Road Re-Designation) – Request by JBS
Consulting, PA for TRS Holdings, LLC to consider changing the road
designation in the subdivision from public to private. The project is
located near the 4300 block of Blue Clay Road.
Pumpkin Creek History
Performance project preliminarily approved by TRC February, 2015 for 62 lots
Construction plan review on-going
No final plats submitted for review
Applicant Request
Due to existing seasonal high water levels on site and the permanent storage
elevations in our storm water pond, we are unable to meet NCDOT storm
water design specifications. The site has an existing storm water outfall
elevation that dictates our storage elevation.
Support data is included as a part of the request including a letter from
NCDOT
Site Plan Data
- Zoning District: R-15 - Residential
- Water Service: Public (available thru CFPUA)
- Sewer Service: Public (available thru CFPUA)
- Road Designation: Private is proposed
- Lots: 62
- Acreage: 24.80
- TIA: Not required
- Land Class: Conservation & Transition (2006 Land Use Plan)
- Access: Blue Clay Road
- Conservation/Resources: None
Required Conditions
Conditions of preliminary site plan approval by TRC, February, 2015 (See
letter)
Revised NCDOT Driveway Permit & Encroachment Agreements (standard)
If roads become “private,” private roads standards required by the County will
be required.
Page 2 of 3
2:30 p.m. Item 2: Dune Top @ Beau Rivage (Performance Plan) – Request by
Norris & Tunstall for Dominion Land Corporation for TRC to consider a 9
lot single family site plan located near the 6200 block of Carolina Beach
Road, west side.
Dune Top History @ Beau Rivage History
New project!
Beau Rivage History
Plan originally approved by Planning staff – February, 1986
Approved project entitled a total of 1,153 units
Western portion property sold New Hanover County reducing total 1,125 units
Preliminary approved units to date 1,112 (with Dune Top 1,121)
Entitled units remaining 4
Site Plan Data
- Zoning District: R-15 Residential
- Water Service: Private (Aqua of NC)
- Sewer Service: Private (Aqua of NC)
- Road Designation: Private
- Lots: 9
- Acreage: 1.16
- TIA: Not this phase
- Land Class: Transition (2006 Land Use Plan)
- Access: Carolina Beach Road
- Conservation Resources: None
- Schools: Bellamy & Anderson Elementary (over capacity
Murray Middle (over capacity)
Ashley High (over capacity)
Suggested Required Conditions
No gates, traffic calming devices, or on-street parking (signage for no on-street
parking)
Revised NCDOT Driveway Permit & Encroachment agreements (if applicable)
Road maintenance agreement with existing HOA(s)
Other conditions as mandated by County Engineering, County Fire, and the
CFPUA (if applicable)
3:00 p.m. Item 3: Riverside (Performance Plan) – Request by Parker &
Associates, Inc. for Clearly Development, Inc. for TRC to consider a 238
unit Residential project located near the 2500 block of Castle Hayne Road
behind the Wrightsboro Plaza Shopping Center.
Page 3 of 3
Riverside History
Project was originally approved in October, 2007 for 238 units
Preliminary project validity was extended by TRC in March, 2014 for 238
units
Project has been purchased by a private party
Little to no construction has taken place on site
No official County final plat approvals have taken place
Site Plan Data
- Zoning District: R-15 Residential
- Water Service: Public (CFPUA)
- Sewer Service: Public (CFPUA)
- Road Designation: Private
- Lots: 238
- Acreage: 95.15
- TIA: Yes
- Land Class: Transition & Conservation
- Conservation Resources: Yes, project does not impact resources
- Schools: Eaton (overcapacity) & Wrightsboro Elementary
Holly Shelter Middle
New Hanover High (overcapacity)
Suggested Required Conditions
No gates, traffic calming devices, or on-street parking
TIA requirements (Presently under review by WMPO, NCDOT, Planning
staff)
The entrance to the project beginning at the T-intersection of N. Kerr Avenue
& Castle Hayne Road extending west into the project will be dedicated,
platted, and constructed as a 60’ right-of-way and be designated as a public
road prior to final plat approval.
All other requirements as dictated by County Engineering, County Fire, and
the CFPUA.
The applicant has requested a waiver on the road stub located on the north side
of the property (originally lots 88 & 89) due to the construction of a single
family home.
7332 Cotesworth Drive
Wilmington, NC 28405
(910) 619-9990
CONSULTING, PA
PLANNING - ENGINEERING - PROJECT MANAGEMENT
April 21, 2015
Mr. Anthony Law
North Carolina Department of Transportation
300 Division Drive
Wilmington, NC
RE: Variance Request
Pumpkin Creek Village Subdivision
Dear Mr. Law:
Mr. John Diaz (among others) have finished the initial review of the aforementioned subdivision plans. I
have met with Mr. Diaz and it appears to me that there only remain two issues. This letter constitutes a
variance request related to these two issues.
Water in Drainage System
Standard NCDOT protocol suggests that drainage systems be designed to keep water out of the piping
system (dry) during period of no rain. This particular site does not lend itself to this scenario. The site has
elevated groundwater conditions (ground at +/-30’ and SWHT of 28.7’ Average). Regardless of where I
placed a storm water BMP, the piping system buried at a minimum depth still will be below the SHWT
and thus not meeting NCDENR – DEMLR minimum criteria for establishing a “permittable” storm
water BMP.
Justifications for this request are as follows.
-We have designed the storm water system to achieve an elevation of the 10yr/24hr storm (28.56’ msl) to
be contained 6” below the lowest rim in the system
-We are already bringing the site up approximately 2’ with a mass grading effort. This will bring the lots
and the road above the 100 yr flood level for the site.
-To achieve the desired NCDOT protocol we would have to bring the site up approximately 5.5’ above
existing grade. This is obviously financially impractical.
-NCDENR – DEMLR suggests a permit pool elevation of 6” above or below tested SHWT. The
measured SHWT for this site (site of pond) is an average of 28.7’. We have pushed this elevation down to
an elevation of 26.5’. I will have to justify to DENR that this can be achieved and not affect any
surrounding wetlands (there are not on our site).
-Based on my research this same situation was accepted in Pender County on a project called “Blake
Farms”. We realize that that this is a local call but wanted you to be aware that Mr. Vause had accepted
this situation in Pender County.
-The developer is willing and able to record on plats and in the subdivision covenants that the property
owners are responsible for all costs associated with pumping out the forebay to drain the system to
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provide maintenance access to NCDOT anytime that maintenance is needed. The POA is responsible for
the operation and maintenance of the pond so this should not be an issue.
Elevated Slope on the Cross Section of the Road
NCDOT Subdivision manual suggests a cross slope on a typical pavement section of 2.0%. Evaluating
the road and drainage system for this project I have looked at increasing this cross slope to 3.0%. This
will assist in getting the water off of the road quicker. It will also allow us to use less drop inlet boxes
(+/- 6 additional boxes). Justifications for this request:
-Clear the pavement of water in a timelier manner
-Reduce the cost of installation and maintenance of additional drop inlets
Please consider these two variance requests, and I look forward to hearing your favorable reply soon.
Should you have any questions please do not hesitate to call or email.
Sincerely yours;
Brad Sedgwick, PE
Attachments: Ground and Water Elevations for Site